package xc.src.demo;

//模拟龟兔赛跑
public class Race implements Runnable {
    //胜利者
    private static String winner;

    @Override
    public void run() {
        for (int i = 0; i < 100; i++) {

            //如果是兔子就睡觉
            if(Thread.currentThread().getName().equals("兔子")&& i%10==0){
                try {
                    Thread.sleep(20);
                } catch (InterruptedException e) {
                    throw new RuntimeException(e);
                }
            }
            //判断比赛是否结束
            boolean flag = gameOver(i);
            //比赛结束
            if (flag) {
                break;
            }

            System.out.println(Thread.currentThread().getName() + "==>跑了" + i + "步");
        }
    }

    //判断是否完成比赛
    private boolean gameOver(int steps) {
        //判断是否由有利者
        if (winner != null) {//已经存在胜利者
            return true;
        }
        {
            if (steps == 100) {
                winner = Thread.currentThread().getName();
                System.out.println("winner is" + winner);
                return true;
            }
        }
        return false;

    }

    public static void main(String[] args) {
        Race race =new Race();
        new Thread(race,"兔子").start();
        new Thread(race,"乌龟").start();
    }
}
